Kombucha tea, that weird hipster juice, with the weird taste and scary bubbles, happens, as do eastern European ferments like Kvass, to contain a touch of alcohol. Makers have to include a special note on their label indicating as much. Kombucha companies are now trying to convince the government to adopt new alcohol content tests, claiming that the current system spurs fines and enforcement actions from regulators needlessly. Sales of the product have increased almost five times between 2013 and 2015.